US1630679A - Electric-lamp socket - Google Patents

Description

Ma 31m 1927.

y b D. N. THOMPSON ELECTRIC LAMP SOCKET Filed July 23. 1920 2 Sheets-Sheet l MUM:

INVEN TOR.

A TTORN'EYS D. N. THOMPSON BLECTRIS LAN? BUCKET Filed July as. 1920 2 Sheets-Sheet 2 A TIORNEYS,

' Patna-d May 31, 1927.

UNITED 'STATES PATENT or-F les.

DON'N. THOMPSON, OI SYBAGUSE, NEW YORK, A SSIGNOB TO PASS a SEYMOUR me,

] SOLVAY, NEW YORK, A CORPORATION 01' NEW YORK.

ELECTRIC-LAMP SOCKET.

Application fled July 23, 1920. Serial No. 398,511.

This invention relates to lamp sockets having intermediate pieces or blocksof insulation interposed between the opposing heads or buttons of'insulation, which pieces or blocks support theswitch mechanism; and the invention has for its object a lamp socket in which the-intermediate pieces or blocks of 'insulation' are relieved of the duty of supporting the heads or buttons in spaced apart 110 relation and are protected against breakage,

' and in which variations in their len he and troubles due to variations, due to ring of the blocks of insulation or' porcelain, are of 'no consequence. a

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed;

In describing this invention, reference is bad to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is an elevation of a referable form of this invention, the same being shown asa pull chain, candle socket, the contiguous part of a candelabra being shown in section.

Figure 2 is an enlarged sectional view through the lamp socket. Figures 3 and 4, (Sheet 1) are inner face views of the op osing heads or buttons of 39 the body of the lam socket.

Figures 5 and 6 (gheet 2) are outer and 1 inner face views respectively, of one of the intermediate blocks, one of the metal up- .ri hts being shown in F1 6. i

i re 7 is a detail vlew of one of the meta u rights. p

This amp socket comprises a body including opposing heads or button means forsupporting the heads and holding them in to spaced apart relation, and switch supporting -means of insulation interposed between the heads and supported by the former means, whereby the switchsupporting means of insulation is relieved of supporting the headsand whereby variations therein are unimportant. 1 and 2 designate the opposing heads or buttons, these heads being usually discoidal in form and formedof suitable insulation, usually porcelain.

The means for supporting the heads 1 and 2 in spaced apart relation and relieving the intermediate piece or pieces ofinsulation of such duty and strain, comprises a metal frame preferably including two opposing elements 3, 4, which for convenience are referred to herein as uprights, as they stand upright when the lamp socket is used as .shown,in a candelabra. Each upright 3 or The switch supporting means of insulam;

13 tion comprises opposing elongated blocks 9,

10, of insulation interposed between the heads, 1,2, but supported by the uprights 3, 4, the blocks being spaced apart to provide space for the switch mechanism, and to permit access to such mechanism These blocks are part-cylindrical, or segments of a cylinder, and their cylindric faces are sub. stantially flush with the peripheries of the heads 1, 2. These blocks are also preferably formed with lengthwise peripheral grooves or recesses 11 in which theuprights lie, this feature facilitatin the holdin oi the blocks, rigid withthe uprights. The locks are additionally secured to the u rights by screws 12 extending transversely t rough the blocks and the uprights.

The heads 1, 2, and blocks 9, 10, interfit or lap at the ends of the blocks and as here shown, the heads are formed with projections or tongues 13, 14 extending between the end portions of the blocks.

The uprights 3, 4 are provided with wire terminals .or binding devices as screws 15 near their lower ends and one of these uprights 3, is electrically connected to the outer lamp terminal or shell 16 by the screw 7. The central lamp terminal 17 is electrically connected in any well known-manner to a conductor 18 located on the inner side of the head 1 and connected to a switch contact 19 on the inner side of the block 10 between the blocks 9, 10. The upright 3 is electrically connected to a switch contact 19 by the screw 12 which mechanically secures the block 9 100 .to the upright 3. This contact is mounted A quarterrotation of the switch arm, ef

fected b a pull on the chain, turns the wings o the switch arm 21 between the wings of the contact 19, so that the switch is off and an additional quarter rotation brings the win s of arm 21 into contact with the-wings of t e contact 19 and theswitch into on position.

The switch mechanism per se, forms no part of this invention and any suitable mechanism may be used in lieu thereof.

The shaft 22 extends at one end into a socket 25 in the block 4 and is rovided with a square slotted head 26 at its other end, which head is exposed and accessible through a work hole 27 provided in the upright 4, the upright being provided with an enlar ement 28 in which the work hole is forme The square head seats in a countersunk socket 29 at the inner end of the work hole and is pressed toward its seat by a spring 30 in the socket 25. For convenience and econom in manufacture, the uprights 3, 4, are dup 'cates and can be made with one set of dies although it is not necessary that the upright 3 be formed with the enlargement or the work hole.

A hickey 31 of any well known construction is mounted on the outer or lower face of the head 1, in any suitable manner and the tube 32 of the fixture is connected to the hickey. 33 is a casing enclosing the structure which casing may be of any well known or suitable construction. The feed wires are brought out of the end of the tube 32 and are connected to the wire terminals on the' It is particularly advantageous in that owing to the use of reinforcing means or upri hts for the intermediate blocks of insulation, supportin the switch mechanism, breakage of these blocks is prevented and lopsidedness of the body due to variations of the blocks, avoided.

What I claim is! 1. An electric lamp socket, comprisinga body, including opposing heads of insulation, metal uprights supporting the heads in spaced-apart relation, and being secured at their ends to the heads, blocks ofinsulation carried, by and secured to the uprights and extending lengthwise of such uprights substantially the entire distance between the heads, lamp terminals mounted on one of the heads, one lamp terminal being electrically connected to one of the uprights, a switch contact located on the inner side of said head, and the other lamp terminal being connected to such switch contact, and switch mechanism including a switch contact carried by one of the blocks and electrically connected to the other upright, and a movable switch member carried by the blocks between the same, and coacting with the switch contacts, the uprights being provided with wire terminals.

2. An electric lamp socket comprising a body including opposing heads of insulation, metal uprights supporting the same in spaced apart relation and secured at their ends thereto, blocks of insulation'carried by the uprights between the heads, lamp terminals mounted on one of the heads, one

lamp terminal being electrically connected to one of the uprights, and the other lamp terminal being electrically connected to a switch contact located on the inner side of said head, and switch mechanism including a switch contact carried by one of the blocks and electrically connected to the other upright and a movable switch member carried by the blocks between the same and coacting with said contacts, the uprights being formed with wire terminals, substantially as and for the purpose set forth.

In testimony whereof, I have hereunto signed my name at Syracuse, in the county of Onondaga, and State of New York, this 24th day of June, 1920.

DON N. THQMPSON.

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